The Museum of HP Calculators

Books and Magazines

The Hewlett-Packard Journal

Hewlett-Packard Company, various years.
Provides excellent in depth articles on many HP calculators and other HP products. Many issues are now online in the Journal Library.

A Guide To HP Handheld Calculators and Computers

W. A. C. Mier-Jedrzejowicz, Ph.D., Wilson/Barnett Publishing, Tustin CA, 1996.
A newly revised resource for the serious collector. Descriptions (and some pictures) of HP's handheld models. Includes information on newer models that the museum hasn't yet documented but is fairly strictly focused on "handhelds". Also includes product codenames and numbering schemes. To order, contact

Surveying Solutions for the HP 33S

This Software by D'Zign book is designed for the NCEES exam, and contains complete COGO, triangle solutions, curve solutions, layout, etc., similar to their earlier books for the HP-41 and HP-42S calculators. It is set up as a combination book of programs, instructions and is also a workbook for practice. For more information, please visit .

Student PAC, Surveying PAC, and TRANSportation PAC for the HP 49G+

Software by D'Zign also has three software pacs for the HP 49G+ which are designed for student and professional surveyors and architects. These pacs are distributed on a 32MB Secure Digital card that also provides the user with approximately 30MB of usable backup memory for coordinate files not currently in use, and additional programs from other sources. These pacs include: coordinate geometry, pre-determined areas, rotation/translation, circular curves, triangle solutions, vertical solutions, spiral curve solutions, end-area, pit volumes, etc. For more information, please visit .

Customize your HP-28

W. A. C. Mier-Jedrzejowicz, Ph.D., published by the author.
Great book on HP-28C/S tips, machine language sysevals etc.

Extend your HP-41

W. A. C. Mier-Jedrzejowicz, Ph.D., Synthetix, Berkeley CA, 1985
ISBN 85-062787
Nearly 700 pages of HP-41C information, covering basic usage to synthetic programming.

Control The World With HP-IL

Gary Friedman, Synthetix, Berkeley CA, 1987
ISBN 0-9612174-9-9
Projects for HP-41C and HP-71B users with HP-IL. Would you believe an HP-41C-based answering machine with speech synthesis and DTMF decoding? "This is the most outrageous 41 project I was able to dream up" -- the author. Other projects include a darkroom controller, electronic tape measure, a slide projector dissolve unit and an intelligent autodialer.

The HP-IL System

Gerry Kane, Steve Harper, and David Ushijima, Osborne/McGraw-Hill, Berkely CA, 1982
ISBN 0-931988-77-2
Good overview of HP-IL with component level information and protocols.

Algorithms for RPN Calculators

John A. Ball, John Wiley & Sons, New York, 1978.
ISBN 0-471-03070-8
Contains an introduction to RPN, suggestions for good algorithms, and ready-made programs in a wide variety of topics. Contains an overview, comparisons and pictures of the HP-35, HP-45, HP-65, HP-67, HP-25, Novus Mathematician, Novus Scientist, Corvus 500 and other RPN calculators. Also contains hints for porting algorithms between various calculators.

The Calculating Machines Their History And Development

Ernst Martin. Translated and edited by Peggy Aldrich Kidwell and Michael R. Williams.
The MIT Press, Cambridge, Massachusetts/London, England.
Originally titled: Die Rechenmaschinen und ihre Entwicklungsgeschichte.
ISBN: 0-262-13278-8
Volume 16 of the Charles Babbage Institute Reprint Series for the History of Computing. Documents the state of the calculating machine industry as of 1925. Contains descriptions and illustrations of many calculators. Probably the single best reference book on these machines.

Handbook of the Napier Tercentenary Celebration

(or Modern instruments and methods of CALCULATION)
Edited by E.M. Horsburgh with a new introduction by Michael R. Williams.
Tomash Publishers, Los Angeles/San Francisco.
ISBN 0-938228-10-2 Volume 3 in the Charles Babbage Institute Reprint Series for the History of Computing. Originally published in 1914 as part of a celebration of the 300th anniversary of the publication of Mirifici Logarithmorum Canonis Descripto where John Napier first described his invention of the logarithm. Has sections on calculating machines, the abacus, slide rules, other mathematical instruments, mathematical models etc.

Charles Babbage Institute reprints may be ordered from the MIT press at (800) 356-0343 or (617) 625-8724.

Scientific American

Scientific American Inc., various years.
Most of HP's early calculators were advertised here in a very informative style. In addition to the advertisements are interesting articles such as "The Small Calculator" in the March '76 issue (with an HP-65 keyboard on the cover) and the September '77 issue devoted to microelectronics.

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